Highly stable under hydrogen sulfide exposure environment without sulfation or discoloration, with stable battery performance and durability during charging and discharging.
![Iron-based metallic foil for current collectors for all solid-state/advanced LIBs](/contents/wp-content/uploads/2024/01/32_main.webp)
Developed materials (electrolytic iron foil/Fe-Ni alloy foil)
![Developed materials](/contents/wp-content/uploads/2024/02/32_material_01.webp)
![Developed materials](/contents/wp-content/uploads/2024/01/32_main.webp)
Tensile strength (copper foil vs. ferrous metal foil)
![Tensile strength](/contents/wp-content/uploads/2024/03/en_32_strength_01.webp)
Characteristics
Gas corrosion test (hydrogen sulfide)
![Copper foil
Contact resistance ratio: 3.2](/contents/wp-content/uploads/2024/03/en_32_exterior_01.webp)
Contact resistance ratio: 3.2
![Electrolyzed iron foil
Contact resistance ratio: 1.0](/contents/wp-content/uploads/2024/03/en_32_exterior_02.webp)
Contact resistance ratio: 1.0
![Fe-Ni alloy foil
Contact resistance ratio: 1.0](/contents/wp-content/uploads/2024/03/en_32_exterior_03.webp)
Contact resistance ratio: 1.0
This is a before/after test comparison.
Cycle characteristics of SiO anode using various current collectors
![Cycle characteristics of SiO anode using various current collectors](/contents/wp-content/uploads/2024/03/en_32_cycle_01.webp)
External image of test battery after dismantling
![Copper foil
(10µm)](/contents/wp-content/uploads/2024/03/en_32_example_01_1.webp)
(10µm)
![Electrolyzed iron foil
(10µm)](/contents/wp-content/uploads/2024/01/32_example_01_2.webp)
(10µm)
![Fe-Ni alloy foil
(10µm)](/contents/wp-content/uploads/2024/01/32_example_01_3.webp)
(10µm)
Joint research organization: AIST Battery System